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Theme: Regular Diagonals
Author/Opus: This is the 228th puzzle from our contributing puzzlemaster Serkan Yürekli.
Rules: Standard Sudoku rules. Also, digits in circles must be odd and digits in squares must be even.
Answer String: Enter the 6th row from left to right, followed by a comma, followed by the 9th row from left to right.
Time Standards (highlight to view): Grandmaster = 2:15, Master = 3:45, Expert = 7:30